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📄 lex.yy.c

📁 C语言表达式语法分析器
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/* A lexical scanner generated by flex */

/* Scanner skeleton version:
 * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
 */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5

#include <stdio.h>


/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif


#ifdef __cplusplus

#include <stdlib.h>
#include <unistd.h>

/* Use prototypes in function declarations. */
#define YY_USE_PROTOS

/* The "const" storage-class-modifier is valid. */
#define YY_USE_CONST

#else	/* ! __cplusplus */

#if __STDC__

#define YY_USE_PROTOS
#define YY_USE_CONST

#endif	/* __STDC__ */
#endif	/* ! __cplusplus */

#ifdef __TURBOC__
 #pragma warn -rch
 #pragma warn -use
#include <io.h>
#include <stdlib.h>
#define YY_USE_CONST
#define YY_USE_PROTOS
#endif

#ifdef YY_USE_CONST
#define yyconst const
#else
#define yyconst
#endif


#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif

/* Returned upon end-of-file. */
#define YY_NULL 0

/* Promotes a possibly negative, possibly signed char to an unsigned
 * integer for use as an array index.  If the signed char is negative,
 * we want to instead treat it as an 8-bit unsigned char, hence the
 * double cast.
 */
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)

/* Enter a start condition.  This macro really ought to take a parameter,
 * but we do it the disgusting crufty way forced on us by the ()-less
 * definition of BEGIN.
 */
#define BEGIN yy_start = 1 + 2 *

/* Translate the current start state into a value that can be later handed
 * to BEGIN to return to the state.  The YYSTATE alias is for lex
 * compatibility.
 */
#define YY_START ((yy_start - 1) / 2)
#define YYSTATE YY_START

/* Action number for EOF rule of a given start state. */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)

/* Special action meaning "start processing a new file". */
#define YY_NEW_FILE yyrestart( yyin )

#define YY_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#define YY_BUF_SIZE 16384

typedef struct yy_buffer_state *YY_BUFFER_STATE;

extern int yyleng;
extern FILE *yyin, *yyout;

#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2

/* The funky do-while in the following #define is used to turn the definition
 * int a single C statement (which needs a semi-colon terminator).  This
 * avoids problems with code like:
 *
 * 	if ( condition_holds )
 *		yyless( 5 );
 *	else
 *		do_something_else();
 *
 * Prior to using the do-while the compiler would get upset at the
 * "else" because it interpreted the "if" statement as being all
 * done when it reached the ';' after the yyless() call.
 */

/* Return all but the first 'n' matched characters back to the input stream. */

#define yyless(n) \
	do \
		{ \
		/* Undo effects of setting up yytext. */ \
		*yy_cp = yy_hold_char; \
		YY_RESTORE_YY_MORE_OFFSET \
		yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
		} \
	while ( 0 )

#define unput(c) yyunput( c, yytext_ptr )

/* The following is because we cannot portably get our hands on size_t
 * (without autoconf's help, which isn't available because we want
 * flex-generated scanners to compile on their own).
 */
typedef unsigned int yy_size_t;


struct yy_buffer_state
	{
	FILE *yy_input_file;

	char *yy_ch_buf;		/* input buffer */
	char *yy_buf_pos;		/* current position in input buffer */

	/* Size of input buffer in bytes, not including room for EOB
	 * characters.
	 */
	yy_size_t yy_buf_size;

	/* Number of characters read into yy_ch_buf, not including EOB
	 * characters.
	 */
	int yy_n_chars;

	/* Whether we "own" the buffer - i.e., we know we created it,
	 * and can realloc() it to grow it, and should free() it to
	 * delete it.
	 */
	int yy_is_our_buffer;

	/* Whether this is an "interactive" input source; if so, and
	 * if we're using stdio for input, then we want to use getc()
	 * instead of fread(), to make sure we stop fetching input after
	 * each newline.
	 */
	int yy_is_interactive;

	/* Whether we're considered to be at the beginning of a line.
	 * If so, '^' rules will be active on the next match, otherwise
	 * not.
	 */
	int yy_at_bol;

	/* Whether to try to fill the input buffer when we reach the
	 * end of it.
	 */
	int yy_fill_buffer;

	int yy_buffer_status;
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
	/* When an EOF's been seen but there's still some text to process
	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
	 * shouldn't try reading from the input source any more.  We might
	 * still have a bunch of tokens to match, though, because of
	 * possible backing-up.
	 *
	 * When we actually see the EOF, we change the status to "new"
	 * (via yyrestart()), so that the user can continue scanning by
	 * just pointing yyin at a new input file.
	 */
#define YY_BUFFER_EOF_PENDING 2
	};

static YY_BUFFER_STATE yy_current_buffer = 0;

/* We provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state".
 */
#define YY_CURRENT_BUFFER yy_current_buffer


/* yy_hold_char holds the character lost when yytext is formed. */
static char yy_hold_char;

static int yy_n_chars;		/* number of characters read into yy_ch_buf */


int yyleng;

/* Points to current character in buffer. */
static char *yy_c_buf_p = (char *) 0;
static int yy_init = 1;		/* whether we need to initialize */
static int yy_start = 0;	/* start state number */

/* Flag which is used to allow yywrap()'s to do buffer switches
 * instead of setting up a fresh yyin.  A bit of a hack ...
 */
static int yy_did_buffer_switch_on_eof;

void yyrestart YY_PROTO(( FILE *input_file ));

void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
#define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )

YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));

static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
static void yy_flex_free YY_PROTO(( void * ));

#define yy_new_buffer yy_create_buffer

#define yy_set_interactive(is_interactive) \
	{ \
	if ( ! yy_current_buffer ) \
		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
	yy_current_buffer->yy_is_interactive = is_interactive; \
	}

#define yy_set_bol(at_bol) \
	{ \
	if ( ! yy_current_buffer ) \
		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
	yy_current_buffer->yy_at_bol = at_bol; \
	}

#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)

typedef unsigned char YY_CHAR;
FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
typedef int yy_state_type;
extern char *yytext;
#define yytext_ptr yytext

static yy_state_type yy_get_previous_state YY_PROTO(( void ));
static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
static int yy_get_next_buffer YY_PROTO(( void ));
static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up yytext.
 */
#define YY_DO_BEFORE_ACTION \
	yytext_ptr = yy_bp; \
	yyleng = (int) (yy_cp - yy_bp); \
	yy_hold_char = *yy_cp; \
	*yy_cp = '\0'; \
	yy_c_buf_p = yy_cp;

#define YY_NUM_RULES 59
#define YY_END_OF_BUFFER 60
static yyconst short int yy_accept[152] =
    {   0,
        0,    0,    0,    0,    0,    0,    0,    0,   60,   58,
       57,   56,   43,   49,   42,   37,   38,   47,   46,   35,
       45,   41,   48,   13,   55,   50,   36,   51,   54,   12,
       39,   40,   52,   12,   53,   44,   45,   12,   12,   12,
       12,   12,   59,   59,    7,    9,    9,   10,   10,   34,
       20,   29,   21,   18,   26,   16,   27,   17,   28,   19,
       13,   13,   40,   39,   25,   31,   33,   32,   24,   12,
       22,   12,   23,   30,   27,    0,    4,    2,    1,    0,
        3,    0,   12,   12,   12,   12,   12,    0,    0,    7,
        9,    0,    9,   10,    0,   10,   13,   15,   14,   12,

        0,    0,    0,    0,    0,    0,    6,    8,   12,   12,
       12,   12,   12,    7,    9,   10,   12,    0,    0,    0,
        0,    0,    0,    4,   12,    1,    3,   12,    0,    0,
        0,    0,    0,    0,   12,   11,    0,    0,    0,    0,
       12,    0,    0,    8,    5,   12,    0,    6,    2,    0,
        0
    } ;

static yyconst int yy_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        4,    4,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    5,    6,    1,    1,    1,    7,    8,    1,    9,
       10,   11,   12,   13,   14,   15,   16,   17,   17,   17,
       17,   17,   17,   17,   17,   17,   17,   18,    1,   19,
       20,   21,   22,    1,   23,   23,   23,   23,   23,   23,
       23,   23,   23,   23,   23,   23,   23,   23,   23,   23,
       23,   23,   23,   23,   23,   23,   23,   23,   23,   23,
       24,    1,   25,   26,    1,    1,   27,   23,   28,   23,

       29,   30,   23,   31,   32,   23,   23,   33,   23,   34,
       35,   36,   37,   38,   39,   40,   41,   23,   42,   43,
       44,   45,    1,   46,    1,   47,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1
    } ;

static yyconst int yy_meta[48] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    2,    1,    3,    1,    1,    1,
        1,    1,    4,    1,    1,    1,    4,    4,    4,    4,
        4,    4,    4,    4,    4,    4,    4,    4,    4,    4,
        4,    4,    4,    4,    4,    1,    1
    } ;

static yyconst short int yy_base[162] =
    {   0,
        0,   34,   73,    0,  104,    0,  133,    0,  283,  284,
      284,  284,  262,  261,   41,  284,  284,  260,   38,  284,
       39,  284,  259,   37,  257,   37,  257,   46,  284,    0,
      284,  284,  256,  243,  105,  284,  165,  231,  232,  243,
      230,   37,  284,  255,   55,    0,  107,    0,  111,  284,
      284,  284,  284,  284,  284,  284,  284,  284,  284,  284,
      252,  137,  284,  284,  248,  284,  284,  284,  247,    0,
      284,  221,  284,  284,  150,  232,  284,  284,  284,  153,
      284,  182,  232,  229,  229,  229,  225,    0,  244,  142,
        0,    0,  183,    0,    0,  184,  241,  284,  284,  228,

      215,  226,  220,  222,  208,  222,  186,  201,  210,  221,
      212,  207,  204,    0,    0,    0,  210,  210,  210,  206,
      206,  204,  212,    0,  198,    0,    0,  207,  208,  199,
      193,  191,  203,  193,  198,    0,  189,  188,  207,  221,
      190,  160,  163,  284,  284,  119,   95,  284,    0,   95,
      284,  204,  207,  210,  212,  215,  217,  220,  119,   58,
       47
    } ;

static yyconst short int yy_def[162] =
    {   0,
      151,    1,  151,    3,    3,    5,    5,    7,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  152,
      151,  151,  151,  152,  151,  151,  151,  152,  152,  152,
      152,  152,  151,  153,  154,  155,  156,  157,  158,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  152,
      151,  152,  151,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  152,  152,  152,  152,  152,  159,  153,  154,
      155,  160,  156,  157,  161,  158,  151,  151,  151,  152,

      151,  151,  151,  151,  151,  151,  151,  151,  152,  152,
      152,  152,  152,  159,  160,  161,  152,  151,  151,  151,
      151,  151,  151,  152,  152,  152,  152,  152,  151,  151,
      151,  151,  151,  151,  152,  152,  151,  151,  151,  151,
      152,  151,  151,  151,  151,  152,  151,  151,  152,  151,
        0,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151
    } ;

static yyconst short int yy_nxt[332] =
    {   0,
       10,   11,   12,   11,   11,   13,   14,   15,   16,   17,
       18,   19,   20,   21,   22,   23,   24,   25,   26,   27,
       28,   29,   30,   31,   32,   33,   30,   30,   30,   30,
       30,   30,   30,   30,   30,   30,   30,   30,   34,   30,
       30,   30,   30,   30,   30,   35,   36,   37,   52,   55,
      116,   61,   57,   62,   64,   65,   66,   56,   58,   59,
       53,  115,   38,   39,   40,   68,   69,   87,   72,   88,
       41,   89,   42,   43,   43,   43,   43,   43,   43,   43,
       43,   43,   43,   43,   43,   43,   43,   43,   43,   44,
       43,   43,   43,   43,   43,   45,   43,   43,   43,   45,

       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   45,   45,   45,   45,   43,   43,
       46,   92,  114,   91,   73,   95,   47,   94,   78,  150,
       47,   47,   47,   47,   47,   47,   47,   47,   47,   47,
       47,   47,   47,   47,   47,   47,   47,   47,   47,   48,
       74,   61,  149,   62,  107,   49,   88,  107,   89,   49,
       49,   49,   49,   49,   49,   49,   49,   49,   49,   49,
       49,   49,   49,   49,   49,   49,   49,   49,   75,  101,
      102,  103,  148,  108,   58,   59,  108,  107,  104,  105,
      107,  147,   76,   77,   78,   79,   80,   92,   95,   91,

       94,   77,  108,   81,   82,  108,   70,   70,   89,   89,
       89,   90,   90,   90,   91,   91,   93,   93,   93,   94,
       94,   96,   96,   96,  146,  145,  144,  143,  142,  141,
      140,  139,   81,  138,   79,  137,  136,  135,  134,  133,
      132,  131,  130,  129,  128,  127,  124,  126,  125,  124,
      123,  122,  121,  120,  119,  118,  117,   97,   88,  113,
      112,  111,  110,  109,  106,  100,   99,   98,   97,   88,
       86,   85,   84,   83,   72,   71,   67,   63,   60,   54,
       51,   50,  151,    9,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,

      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151
    } ;

static yyconst short int yy_chk[332] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    2,   15,   19,
      161,   24,   21,   24,   26,   26,   26,   19,   21,   21,
       15,  160,    2,    2,    2,   28,   28,   42,   42,   45,
        2,   45,    2,    3,    3,    3,    3,    3,    3,    3,
        3,    3,    3,    3,    3,    3,    3,    3,    3,    3,
        3,    3,    3,    3,    3,    3,    3,    3,    3,    3,

        3,    3,    3,    3,    3,    3,    3,    3,    3,    3,
        3,    3,    3,    3,    3,    3,    3,    3,    3,    3,
        5,   47,  159,   47,   35,   49,    5,   49,  150,  147,
        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
        5,    5,    5,    5,    5,    5,    5,    5,    5,    7,
       35,   62,  146,   62,   80,    7,   90,   80,   90,    7,
        7,    7,    7,    7,    7,    7,    7,    7,    7,    7,
        7,    7,    7,    7,    7,    7,    7,    7,   37,   75,
       75,   75,  143,   82,   37,   37,   82,  107,   75,   75,
      107,  142,   37,   37,   37,   37,   37,   93,   96,   93,

       96,   37,  108,   37,   37,  108,  152,  152,  153,  153,
      153,  154,  154,  154,  155,  155,  156,  156,  156,  157,
      157,  158,  158,  158,  141,  140,  139,  138,  137,  135,
      134,  133,  132,  131,  130,  129,  128,  125,  123,  122,
      121,  120,  119,  118,  117,  113,  112,  111,  110,  109,
      106,  105,  104,  103,  102,  101,  100,   97,   89,   87,
       86,   85,   84,   83,   76,   72,   69,   65,   61,   44,
       41,   40,   39,   38,   34,   33,   27,   25,   23,   18,
       14,   13,    9,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,

      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
      151
    } ;

static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "lex"
#define INITIAL 0
#line 2 "lex"
#include <stdio.h> 
#include <stdlib.h>
#include <string.h>
#include "head.h"
#include "yacc.tab.h"
extern void yyerror(char *);
extern symrec * sym_table;
symrec *putsym(char const *,int,double);         
symrec *getsym(char const *);               
symrec *updatesym(char const *,int,double);
void show_all_sym();
void show_all_func();
void showData(char *); 
char file_name[255];
char content[255][80];
FILE * fp;
int i; 
extern FILE * fout;
#define file_input 1
#define file_type 2
#define file_clear 3

#line 512 "lex.yy.c"

/* Macros after this point can all be overridden by user definitions in
 * section 1.
 */

#ifndef YY_SKIP_YYWRAP

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